The best Hacker News stories from Show from the past day

from

All Show

from the past*

day week month

with these search terms:

Create follow Go back

Latest posts:

Show HN: Spark, An advanced 3D Gaussian Splatting renderer for Three.js

I'm the co-creator and maintainer of <a href="https://aframe.io/" rel="nofollow">https://aframe.io/</a> and long time Web 3D graphics dev.<p>Super excited about new techniques to author / render / represent 3D. Spark is a an open source library to easily integrate Gaussian splats in your THREE.js scene I worked with some friends and I hope you find useful.<p>Looking forward to hearing what features / rendering techniques you would love to see next.

Show HN: High End Color Quantizer

This is a personal project I've been working on for a long time now.<p>I stumbled upon the color quantization problem while doing something related for work. I then found an interesting paper for which I could find no implementations online, and the thing went from "let's implement this paper" to getting pretty obsessed with the whole thing.<p>It's at an early, eaaaarly stage. There's a lot of work to be done, and it's a memory hog, but generally speaking works quite well, and the output is for the most part very high quality, so I'm happy to share it as beta.

Show HN: PyDoll – Async Python scraping engine with native CAPTCHA bypass

Show HN: A “Course” as an MCP Server

We wanted to build a course for new Mastra devs to get started quickly. However, we knew videos would go out of date and be more difficult to maintain.<p>We decided to launch our "course" as an MCP server. This way your coding agent actually teaches the course content to you and can help you write the code. We think this is a really interactive way to learn.<p>Using an editor with MCP support (such as Cursor, Windsurf, or VSCode), your code agent will call the appropriate MCP tools which will return context for the agent. This context tries to instruct the agent that it should be teaching you the content, not just doing the work for you.<p>The course is still pretty experimental and some models work better than others. Code is available in the Mastra Github repo in the mcp-docs-server package (<a href="https://github.com/mastra-ai/mastra/tree/main/packages/mcp-docs-server">https://github.com/mastra-ai/mastra/tree/main/packages/mcp-d...</a>)

Show HN: A “Course” as an MCP Server

We wanted to build a course for new Mastra devs to get started quickly. However, we knew videos would go out of date and be more difficult to maintain.<p>We decided to launch our "course" as an MCP server. This way your coding agent actually teaches the course content to you and can help you write the code. We think this is a really interactive way to learn.<p>Using an editor with MCP support (such as Cursor, Windsurf, or VSCode), your code agent will call the appropriate MCP tools which will return context for the agent. This context tries to instruct the agent that it should be teaching you the content, not just doing the work for you.<p>The course is still pretty experimental and some models work better than others. Code is available in the Mastra Github repo in the mcp-docs-server package (<a href="https://github.com/mastra-ai/mastra/tree/main/packages/mcp-docs-server">https://github.com/mastra-ai/mastra/tree/main/packages/mcp-d...</a>)

Show HN: A “Course” as an MCP Server

We wanted to build a course for new Mastra devs to get started quickly. However, we knew videos would go out of date and be more difficult to maintain.<p>We decided to launch our "course" as an MCP server. This way your coding agent actually teaches the course content to you and can help you write the code. We think this is a really interactive way to learn.<p>Using an editor with MCP support (such as Cursor, Windsurf, or VSCode), your code agent will call the appropriate MCP tools which will return context for the agent. This context tries to instruct the agent that it should be teaching you the content, not just doing the work for you.<p>The course is still pretty experimental and some models work better than others. Code is available in the Mastra Github repo in the mcp-docs-server package (<a href="https://github.com/mastra-ai/mastra/tree/main/packages/mcp-docs-server">https://github.com/mastra-ai/mastra/tree/main/packages/mcp-d...</a>)

Show HN: I made a 3D printed VTOL drone

I made this 130 mile capable VTOL drone in only 90 days. It can fly for 3 hours on a single charge. That would make it one of the longest range and endurance 3D printed VTOLs in the world.<p>This is the thing I'm most proud of building to date!<p>Before this project, I was a total CAD, 3D printing and aerodynamic modeling beginner. I had only built and flown one VTOL before.<p>SPECS<p>Wingspan: 3.9 ft (1200 mm) Length: 2.5 ft (770 mm) Weight: 5.6 lb (2.55kg)<p>Airframe: foaming PLA (Bambu PLA-Aero) and PETG structural parts printed on A1 printer, CFRP booms and spars<p>Battery: Li-ion silicon anode Amprius SA08 cells, 6s2p pack by Upgrade Energy Motors: 2807 AOS for lift and cruise (unoptimized) Lifting ESCs: 4 in 1 Holybro Tekko32 F4 45A Cruise ESC: Flycolor Raptor 5 45A Lifting and cruise props: 7042 Gemfan (unoptimized)<p>Flight controller: Speedybee F405 Wing GPS: M10<p>Firmware: Ardupilot 4.6.0<p>---<p>This video edit ended up shorter than I planned. Being my first Youtube video with significant post production effort, I underestimated the work required to make a longer in-depth video with voiceover, edited footage, etc.

Show HN: I made a 3D printed VTOL drone

I made this 130 mile capable VTOL drone in only 90 days. It can fly for 3 hours on a single charge. That would make it one of the longest range and endurance 3D printed VTOLs in the world.<p>This is the thing I'm most proud of building to date!<p>Before this project, I was a total CAD, 3D printing and aerodynamic modeling beginner. I had only built and flown one VTOL before.<p>SPECS<p>Wingspan: 3.9 ft (1200 mm) Length: 2.5 ft (770 mm) Weight: 5.6 lb (2.55kg)<p>Airframe: foaming PLA (Bambu PLA-Aero) and PETG structural parts printed on A1 printer, CFRP booms and spars<p>Battery: Li-ion silicon anode Amprius SA08 cells, 6s2p pack by Upgrade Energy Motors: 2807 AOS for lift and cruise (unoptimized) Lifting ESCs: 4 in 1 Holybro Tekko32 F4 45A Cruise ESC: Flycolor Raptor 5 45A Lifting and cruise props: 7042 Gemfan (unoptimized)<p>Flight controller: Speedybee F405 Wing GPS: M10<p>Firmware: Ardupilot 4.6.0<p>---<p>This video edit ended up shorter than I planned. Being my first Youtube video with significant post production effort, I underestimated the work required to make a longer in-depth video with voiceover, edited footage, etc.

Show HN: I made a 3D printed VTOL drone

I made this 130 mile capable VTOL drone in only 90 days. It can fly for 3 hours on a single charge. That would make it one of the longest range and endurance 3D printed VTOLs in the world.<p>This is the thing I'm most proud of building to date!<p>Before this project, I was a total CAD, 3D printing and aerodynamic modeling beginner. I had only built and flown one VTOL before.<p>SPECS<p>Wingspan: 3.9 ft (1200 mm) Length: 2.5 ft (770 mm) Weight: 5.6 lb (2.55kg)<p>Airframe: foaming PLA (Bambu PLA-Aero) and PETG structural parts printed on A1 printer, CFRP booms and spars<p>Battery: Li-ion silicon anode Amprius SA08 cells, 6s2p pack by Upgrade Energy Motors: 2807 AOS for lift and cruise (unoptimized) Lifting ESCs: 4 in 1 Holybro Tekko32 F4 45A Cruise ESC: Flycolor Raptor 5 45A Lifting and cruise props: 7042 Gemfan (unoptimized)<p>Flight controller: Speedybee F405 Wing GPS: M10<p>Firmware: Ardupilot 4.6.0<p>---<p>This video edit ended up shorter than I planned. Being my first Youtube video with significant post production effort, I underestimated the work required to make a longer in-depth video with voiceover, edited footage, etc.

Show HN: Chili3d – A open-source, browser-based 3D CAD application

I'm currently developing Chili3D, an open-source, browser-based 3D CAD application. By compiling OpenCascade to WebAssembly and integrating Three.js, Chili3D delivers near-native performance for powerful online modeling, editing, and rendering—all without local installation. Access it here:<p><a href="https://github.com/xiangechen/chili3d">https://github.com/xiangechen/chili3d</a><p>Features:<p>Modeling Tools: Create basic shapes (boxes, cylinders, cones, etc.), 2D sketches (lines, arcs, circles, etc.), and perform advanced operations (boolean operations, extrusion, revolution, etc.).<p>Snapping and Tracking: Precisely snap to geometric features, workplanes, and track axes for accurate alignment.<p>Editing Tools: Modify (chamfer, fillet, trim, etc.), transform (move, rotate, mirror), and perform advanced edits (feature removal, sub-shape manipulation).<p>Measurement Tools: Measure angles and lengths, and calculate sums of length, area, and volume.<p>Document Management: Create, open, and save documents, with full undo/redo history and support for importing/exporting STEP, IGES, BREP formats.<p>User Interface: Office-style interface with contextual command organization, hierarchical assembly management, dynamic workplanes, and 3D viewport controls.<p>Multi-Language Support: Built-in i18n support with current languages including Chinese and English.

Show HN: Chili3d – A open-source, browser-based 3D CAD application

I'm currently developing Chili3D, an open-source, browser-based 3D CAD application. By compiling OpenCascade to WebAssembly and integrating Three.js, Chili3D delivers near-native performance for powerful online modeling, editing, and rendering—all without local installation. Access it here:<p><a href="https://github.com/xiangechen/chili3d">https://github.com/xiangechen/chili3d</a><p>Features:<p>Modeling Tools: Create basic shapes (boxes, cylinders, cones, etc.), 2D sketches (lines, arcs, circles, etc.), and perform advanced operations (boolean operations, extrusion, revolution, etc.).<p>Snapping and Tracking: Precisely snap to geometric features, workplanes, and track axes for accurate alignment.<p>Editing Tools: Modify (chamfer, fillet, trim, etc.), transform (move, rotate, mirror), and perform advanced edits (feature removal, sub-shape manipulation).<p>Measurement Tools: Measure angles and lengths, and calculate sums of length, area, and volume.<p>Document Management: Create, open, and save documents, with full undo/redo history and support for importing/exporting STEP, IGES, BREP formats.<p>User Interface: Office-style interface with contextual command organization, hierarchical assembly management, dynamic workplanes, and 3D viewport controls.<p>Multi-Language Support: Built-in i18n support with current languages including Chinese and English.

Show HN: Chili3d – A open-source, browser-based 3D CAD application

I'm currently developing Chili3D, an open-source, browser-based 3D CAD application. By compiling OpenCascade to WebAssembly and integrating Three.js, Chili3D delivers near-native performance for powerful online modeling, editing, and rendering—all without local installation. Access it here:<p><a href="https://github.com/xiangechen/chili3d">https://github.com/xiangechen/chili3d</a><p>Features:<p>Modeling Tools: Create basic shapes (boxes, cylinders, cones, etc.), 2D sketches (lines, arcs, circles, etc.), and perform advanced operations (boolean operations, extrusion, revolution, etc.).<p>Snapping and Tracking: Precisely snap to geometric features, workplanes, and track axes for accurate alignment.<p>Editing Tools: Modify (chamfer, fillet, trim, etc.), transform (move, rotate, mirror), and perform advanced edits (feature removal, sub-shape manipulation).<p>Measurement Tools: Measure angles and lengths, and calculate sums of length, area, and volume.<p>Document Management: Create, open, and save documents, with full undo/redo history and support for importing/exporting STEP, IGES, BREP formats.<p>User Interface: Office-style interface with contextual command organization, hierarchical assembly management, dynamic workplanes, and 3D viewport controls.<p>Multi-Language Support: Built-in i18n support with current languages including Chinese and English.

Show HN: I made a 3D networked open world automation game with no game engine

Over the last 4 years I've been developing Skyformer, including making all the art. Technical features include:<p>- OpenGL for graphics, OpenAL for sound, GLFW for input<p>- Terrain rendered using techniques inspired by REDengine 3 with a custom terrain/world editor.<p>- Networking framework for co-op with TCP + custom binary protocol<p>- Immediate mode UI framework, SDF text rendering<p>- Cascaded shadow mapping with soft shadows.<p>- Weather simulation (with my own fake physics)<p>- Dynamic skydome<p>- Water based on Gerstner waves<p>- Swept-sphere collision detection and response<p>- Soft-particles / transparency<p>- God rays<p>- Grass rendering<p>- FXAA, SSAO, Bloom<p>- etc.<p>You can ask me anything and let me know if you have any feedback. Thanks!

Show HN: I made CSS-only glitch effect

Show HN: Glowstick – type level tensor shapes in stable rust

Hi HN,<p>In the past few years I've become more interested in machine learning. Since I'm sure the same is true for many here, I wanted to share this project I've been working on: glowstick uses type-directed metaprogramming to keep track of tensor shapes in Rust's type system and determine which operations are permitted or not at compile time.<p>I find Rust has a lot of strengths when it comes to ML applications, but waiting until runtime to find shape related issues feels a bit strange since normally I don't run the code all that often while developing. Given Rust has fancy types available, I figured I'd try my hand at using them to address this.<p>I've added integration crates for the two ML frameworks I use most frequently, candle and burn, and included examples of implementing llama 3.2 in each using typed shapes for much of the model internals and inference loop. Mixtures of static and dynamic dimensions should be supported well enough for most applications at this point, though there are of course still improvements to be made.<p>Any feedback is appreciated!

Show HN: Somo – a human friendly alternative to netstat

Show HN: Somo – a human friendly alternative to netstat

Show HN: Munal OS: a graphical experimental OS with WASM sandboxing

Hello HN!<p>Showing off the first version of Munal OS, an experimental operating system I have been writing in Rust on and off for the past few years.<p><a href="https://github.com/Askannz/munal-os">https://github.com/Askannz/munal-os</a><p>It's an unikernel design that is compiled as a single EFI binary and does not use virtual address spaces for process isolation. Instead, applications are compiled to WASM and run inside of an embedded WASM engine.<p>Other features:<p>* Fully graphical interface in HD resolution with mouse and keyboard support<p>* Desktop shell with window manager and contextual radial menus<p>* PCI and VirtIO drivers<p>* Ethernet and TCP stack<p>* Customizable UI toolkit providing various widgets, responsive layouts and flexible text rendering<p>* Embedded selection of applications including:<p><pre><code> * A web browser supporting DNS, HTTPS and very basic HTML * A text editor * A Python terminal </code></pre> Checkout the README for the technical breakdown.<p>Demo video: <a href="https://streamable.com/5xqjcf" rel="nofollow">https://streamable.com/5xqjcf</a>

Show HN: Munal OS: a graphical experimental OS with WASM sandboxing

Hello HN!<p>Showing off the first version of Munal OS, an experimental operating system I have been writing in Rust on and off for the past few years.<p><a href="https://github.com/Askannz/munal-os">https://github.com/Askannz/munal-os</a><p>It's an unikernel design that is compiled as a single EFI binary and does not use virtual address spaces for process isolation. Instead, applications are compiled to WASM and run inside of an embedded WASM engine.<p>Other features:<p>* Fully graphical interface in HD resolution with mouse and keyboard support<p>* Desktop shell with window manager and contextual radial menus<p>* PCI and VirtIO drivers<p>* Ethernet and TCP stack<p>* Customizable UI toolkit providing various widgets, responsive layouts and flexible text rendering<p>* Embedded selection of applications including:<p><pre><code> * A web browser supporting DNS, HTTPS and very basic HTML * A text editor * A Python terminal </code></pre> Checkout the README for the technical breakdown.<p>Demo video: <a href="https://streamable.com/5xqjcf" rel="nofollow">https://streamable.com/5xqjcf</a>

Show HN: Munal OS: a graphical experimental OS with WASM sandboxing

Hello HN!<p>Showing off the first version of Munal OS, an experimental operating system I have been writing in Rust on and off for the past few years.<p><a href="https://github.com/Askannz/munal-os">https://github.com/Askannz/munal-os</a><p>It's an unikernel design that is compiled as a single EFI binary and does not use virtual address spaces for process isolation. Instead, applications are compiled to WASM and run inside of an embedded WASM engine.<p>Other features:<p>* Fully graphical interface in HD resolution with mouse and keyboard support<p>* Desktop shell with window manager and contextual radial menus<p>* PCI and VirtIO drivers<p>* Ethernet and TCP stack<p>* Customizable UI toolkit providing various widgets, responsive layouts and flexible text rendering<p>* Embedded selection of applications including:<p><pre><code> * A web browser supporting DNS, HTTPS and very basic HTML * A text editor * A Python terminal </code></pre> Checkout the README for the technical breakdown.<p>Demo video: <a href="https://streamable.com/5xqjcf" rel="nofollow">https://streamable.com/5xqjcf</a>